Transmission-gear.



PATENTED OCT. 25, 1904.

3SHEETS-SHEET 1.

llt. A

A TTOHNE VS.

N\ SN M N K IN S M. i a i A. E. OSBORN.

TRANSMISSION GEAR.

APPLICATION FILED NOV. 16, 1903.

no MODEL.

PATENTED OCT. 25, 1904. A. E. OSBORN.

TRANSMISSION GEAR.

APPLIOATION FILED NOV. 16, 1903.

3 SHEETSSHEET 2.

NO MODEL.

No. 773,414.. PATENTED 00125, 1904. A. E. OSBORN.

TRANSMISSFON GEAR.

APPLICATION FILED NOV. 1 6 1903. N0 MODEL. 3 SHEETS-SHEET 3.

PATENT Patented October 25, 1904.

i EEicE.

ALDEN E. osBoR or NEW YORK, N. Y.

TRANSMISSION-GEAR.

SPECIFICATION forming part of Letters Patent No. 773,414, dated October25, 1904.

Application filed November 16, 1903. Serial No. 181,323- (No model.)

To uJ/Z 1071,0717 it Duty concern:

Be it known that I, ALDEN E. OsBoRN, a citizen of the United States, anda resident of the city of New York, borough of the Bronx, in the countyand State of New York, have in vented a new and ImprovedTransmission-Gear, of which the following is a full, clear, and exactdescription.

This invention relates to a means for transmitting motion at difierentspeeds and in different directions.

It comprises a system of gearingof the sun and-planet type especiallyadaptable to motorvehicles, but useful in other connectionsas, forexample. on machine-tools.

Primarily the object of the invention is to provide a gear of thischaracter having the least number of parts consistent with sufficientstrength and efficiency. To this end I employ in connection with thedriving and driven elements a pinion, a planetary gear coactingtherewith, and an internal gear inclosing and meshing with the planetarygear, the

' planetary gear having a suitable mount and the internal gear beingalsosuitably mounted, the axes of said mountings being coincident andsaid pinion being in connection either with the driving or drivenelements and said mountings being shiftable axially, respectively, toeffect connection with or disconnection from the element other than thatwith which the pinion is connected. Working with these parts is a clutchfor directly connecting the driving and driven elements.

In the specific embodiment of my invention here illustrated two speedsforward and one reverse are provided and'the pinion isfast to thedriving element, while the driven element is in the form of a sleeveaxially coincident with the driving element and having clutchteeth withwhich one or both of the gearmountings are engageable, both mountingssliding on the driven sleeve and the clutch acting directly between thedrive shaft or sleeve and one of the gear-mounts. This specificarrangement is not, however, essential to the principle of my invention.

This specification is a specific description of the above-referred-tospecific embodiment of myinvention, while the claims are definitions ofthe actual scope thereof.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar characters of reference indicatecorresponding parts in all the figures.

Figure 1 is a longitudinal section of the gear. Figs. 2 and 3 arecross-sections on the line 2 2 of Fig. 1 and illustrating particularlythe coactive gear movements, and Fig. 4 is a longitudinal section of amodified form of gear.

In Figs. 1, 2, and 3, 0 indicates the driveshaft, which passes axiallythrough the gearing and "constitutes the sustaining member thereof, and6 indicates the driving-pinion, keyed on the shaft. With this pinion aremeshed a number of planetary gears 0. the shafts 0' of which are carriedon the planetarygear mount d. 0 indicates a clutch of any suitableformwhich acts between a concentric flange cl on the gear-mount d andthe shaft 60 to fasten the parts (Z and (0 directly together. The hub (Zof the gear-mount (Z has a reentrant tubular extension (Z which isfitted loosely on the driven sleeve f, thissleeve being in turn looselymounted on'the shaft (6 and having at its inner end a fiangef", betweenwhich and the hub (Z of the gear-mount cl an expansive spiral spring gis arranged. it indicates the internal gear inclosing and meshing withthe planetary gears, and 2' indicates the mount therefor, which mount ispreferably an integral part of the gear it, having its hub z" mountedloosely on the hub (Z of the gear-mount cl. It indicates any suitablemeans bearing against the gear-mount 2' for pressing said mount and themount d as a unit leftward in Fig. l, contrary to the action of thespring 6 said spring returning these parts as a unit to the positionshown in Fig. 1 when the pressure on the device it is relaxed. Thedriven sleeve f is provided with clutch-teeth f and the hubs (l and z"of the gear-mounts are respectively formed with clutch-teeth OZ and 6The springg forces the gear-mounts rightward, Fig. 1, to engage theteeth 0Z*With the teeth f and by the operation of the device lc thegear-mounts may be pushed leftand to disengage the teeth (1" from theteeth f and to engage the teeth 2' with said teeth f indicates asprocket or other means for transmitting the movement of the drivenelement f. In connection with the shifting of the gear-mounts it will beobserved that this does not interfere with the mesh of the gears Z), c,and 71, since the face of the gear?) is broadened to allow the specifiedmovement, and the mounts of the gears c and it always shift as a unit. 1indicates a restraining device applied to theflanged of the gear-mount(I, and 11/ indicates a restraining device applied to the periphery ofthe gear-mount i.

In the operation of the device to attain high speed the clutch a shouldbe rendered active, thus turning the gear-mount (Z with the shaft a andmoving the gear 0 bodily with the gear Z1 around the axis of the shaft.This causes a like turning movement of the mount v', and therefore thesleevef is driven direct from the shaft a, notwithstanding which of theteeth 7 or 2" are in direct connection with the driven sleeve. To attainlow speed, the clutch (2 should be released and the gear-mounts allowedto assume the position shown in Fig. 1. Then by arresting the movementof the mount the gears will operate as indicated by the arrows in Fig.2, and the mount (Z and sleeve f will be turned in the same direction asthe shaft (4 is turning, but at a lower speed. To reverse this movement,the mounts (Z and 4 should be shifted to cause the teeth 1' to connectwith the teeth f and then the movement of the mount (Z should bearrested. This will cause the gears to operate as indicated by thearrows in Fig. 3, and the mount and consequently the sleeve f will thenbe driven reversely to the movement of the drivingshaft. In addition toits functions of transmitting movement this organism provides twodistinct and wholly effective brakes for restraining the movement of thedriven sleeve f and of the part or parts which may be in drivingconnection therewith. The apparatus may be used as a brake by operatingeither one of the restraining devices Z or m, according as to which ofthe gear-mounts is in connection with the sleeve f through the medium oftheir teeth (I or (1.

The modification shown in Fig. a involves merely a reorganization of theelements above described. The planetary-gear mount (Z has at its innerperiphery teeth (6, which interlock with teeth f on the driven sleeve f.Said mount a! is supported to turn freely within the peripheral 'llange0 of a collar 0, which is splined on the sleeve f. The internal-gearmount "5" is carried to turn around said flange 0 and has an internalweb 11" fitting between two friction-ringsp. (1 indicates a ring lyingagainst the outer friction-ring while the inner friction-ring bearsagainst the collar 0. By means of elbow-levers 1' and a cam-collar saidparts 0, p, 2", and q may be clamped firmly together, and in this mannerthe gearmount will be rendered fast on the sleeve f. The pinion 7) isdouble-faced, as before, and the two gear-mounts, with their gears, arearranged to be slid rightward from the position shown in Fig. a by adevice Zr, thus disengaging the teeth f and (.Z, the parts 0, 1), 1 and"1' following the sliding movement. A spring 0, corresponding infunction to the previouslydescribed spring g, may be employed to returnthe gears and their mounts to the leftward position. This spring may bearranged in any desired manner for example, as shown in Fig. l. A singlerestrainingdevice 'll/iS provided and either of the two gear-mounts isarranged to move within this restraining device, so that one restrainingdevice acts for both mounts. 1n the operation of this modilied form ofthe gear to attain high speed when the parts are positioned as in thedrawings the cam-collar 1" should be moved leftward, thus locking theinternal-gear mount on the sleeve f, and since the planetary-gear mountis already locked to this sleeve by the teeth f and d it is clear thatthe whole gear must turn as a unit. To attain low speed, the collar)should bemoved back and the restraining device it applied to theinternal-gear mount vi". The planetary gear will then run around theinternal gear and carry with it (the planetary gear) the mount d" andsleeve f, but driving said parts at a lower speed than that of thepinion, the movement being the same as shown in Fig. 2.. To attainreverse speed, the gear-mounts should be shifted to disengage the teeth1i and f and to place the planetary-gear mount within the grasp of therestraining device. Then by applying the restraining dovice to theinternal-gear mount and tightening the clutch parts j), Z, and q,fastening the internatgear mount to the collar 0 and sleeve said sleevewill be driven reversely to and at a slower speed than the pinion, themovement corresponding to that shown in Fig. 3.

From the foregoingitwill be seen that while this organism of gearsprovides two speeds forward and one reverse it involves only one set ofplanetary gears, and consequently it avoids the weight, expense, andcomplication of the extra set of planet-gears heretofore regarded asnecessary in gearing of the same capacity. Also when fitted to amotor-driven vehicle it dispenses with the necessity of other brakes forthe vehicle, since by means of my invention, as shown in Figs. 1, 2, and3, two distinct positively-acting brakes are, and, as shown in Fig. 4,one positively-acting brake is, provided. The spring 9 and the device71:, as in Figs. 1, 2, and 3, acting in opposition greatly reduce thefriction otherwise involved in connection with devices for shifting thegear-mounts, since when the parts are running in the position shown inFig. 1 (low speed) and at high speed the device 76 may be placed out ofengagement with the mountz' or so lightly engaged as to involve noappreciable retarding influence. It is only when the parts are inreverse position that there is any positive engagement between thedevice Z and the mount '1', and even then this engagement is only of aforce equal to the tension of the spring 9.

It will be noted that no interlocking devices will be required with thisgear in order to prevent throwing it to reverse position when the otherspeeds are being transmitted, as the application of the brake bands orclutch to the drums will prevent their being shifted sidewise for thereverse. It is not essential that the driving force be applied to theshaft (1, and although the order of movement Would be reversed if thedriving force were applied to the sleeve f the parts would still performessentially the function herein described.

I desire it understood that in the following claims the term restrainingis employed'as meaning to check or hold in the rotating means, as wellas to actually stop their movement.

Various changes in the detailed embodiment of the invention may beresorted to without departing from the spirit of the invention asdefined in the claims.

Having thus described my invention, I claim as'new and desire. to secureby Letters Patent 1. In a transmission-gear, the combination with asustaining means, of a pinion, a planetary gear, 'a rotatable mountingfor the planetary gear, a third gear meshed with the plan etary gear, amounting for the third gear, 'both of said mountings being axiallyshiftable, a member with which either of said mountings may be connectedby the shifting thereof, and means for independently restraining therotative movements of the gear-mounts.

2. In a transmission-gear, the combination with the sustaining means, ofa pinion, a planetary gear meshed therewith, a rotatable mounting forthe planetary gear, a third gear meshed with the planetary gear, arotatable mount for the third gear, means for independently restrainingthe rotative movements of said mountings, a member coacting with thegear-mounts, the gear-mounts being shiftable relatively to the pinionand means for connecting said member With either gear-mount upon theshifting of the mounts.

3. In a transmission-gear, the combination with a supporting-shaft, of apinion fast thereto, a planetary gear meshed with the pinion, a rotativemount for the planetary gear, a third gear meshed with the planetarygear, a rotative mount for the third gear, both of said mounts beingalso axially shiftable, means for independently restraining the rotativemovements of the mounts, a sleeve loose on the supporting-shaft, andmeans for axially shifting the gear-mounts, and for locking either mountwith the sleeve upon the shifting of the gearmounts.

4. In a transmission-gear, the combination with a sustaining means, of apinion, a planetary gear, a rotatable mounting for the planetary gear, athird gear meshed with the planetary gear, a mounting for the thirdgear, both of said mountings being axially shiftable, a member adaptedto be connected with either gear mount, means for shifting thegearmounts and for connecting either mount with said member upon theshifting of the mounts, means for independently restraining the rotativemovements of the gear-mounts, and means in addition to the aforesaidelements and coacting with certain thereof for causing thetransmission-gear to turn as a unit.

5. In a transmission-gear, the combination with asupporting-shaft, of apinion fast thereto, a planetary gear meshed with the pinion, a rotativemount for the planetary gear, a third gear meshed with the planetarygear, a rotative mount for the third gear, both of said mounts beingalso axially shiftable, means for independently restraining the rotativemovements of the mounts, a sleeve loose on the supporting-shaft, meansfor axially shifting the gear-mounts and for connecting either gearmountwith the sleeve, upon the shifting of the gear-mounts, and means inaddition to the aforesaid elements and coacting with certain thereof forcausing the transmission-gear to turn as a unit.

6. In a transmission-gear, the combination with the driving and drivenelements, of two coacting gears, a rotatable mount for each of saidgears, the gear-mounts being also axially shiftable, means forindependently restraining the rotation of said mounts, a gear inconnection with one of the aforesaid elements and meshed with one of thesaid coacting gears, and means for connecting either of the gearmountswith the other of the aforesaid elements, said means being operativeupon the axial shifting of the gear-mounts.

7. In a transmission-gear,'the combination with the driving and drivenelements, of two coacting gears, a rotatable mount for each of saidgears, the gear-mounts being also axially shiftable, means forindependently restraining the rotation of said mounts, a gear inconnection with one of the aforesaid elements and meshed with one of thesaid coacting gears, means for connecting either of the gear-mounts withthe other of the aforesaid elements, said means being operative upon theaxial shifting of the gear-mounts, and means for so shifting thegear-mounts.

8. In a transmission-gear, the combination with the driving and drivenelements, of two coacting gears, arotatable mount for each of saidgears, the gear-mounts being also axially shiftable, means forindependently restraining the rotation of said mounts, a gear inconnection with one of the aforesaid elements and meshed with one of thesaid coacting gears, means for connecting either of the gearmounts withthe other of the aforesaid elements, said means being operative upon theaxial shifting of the gearmounts, a spring pressing the gear-rnounts inone direction, and means for acting against the spring to press thegeanmounts in the other direction.

9. In a transmission-gear, the combination with the driving and drivenelements, of two coacting gears, a rotatable mount for each of saidgears, the gear-mounts being also axially shiftable, means forindependently restraining the rotation of said mounts, a gear inconnection with one of the aforesaid elements and meshed with one of thesaid coacting gears, means for connecting either of the gearmounts withthe other of the aforesaid elements, said means being operative upon theaxial shifting of the gear-mounts, and a re leasable means in additionto the other parts and coacting with certain thereof for causing thetransmission-gear to turn as a unit.

10. In a transmission-gear,the combination with the driving and drivenelements, of two coacting gears, a rotatable mount for each of saidgears, means for independently restraining the rotation of said mounts,a gear in connection with one of the aforesaid elements and meshed withone of the said coacting gears, means for connecting either of thegearmounts with the other of the aforesaid elements, said means beingoperative upon the axial shifting of the gear-mounts, and a releasablemeans in addition to the other parts and coacting with certain thereoffor causing the transmission-gear to turn as a unit.

11. In a transmissiomgear,the combination of a driving element, a pinionfast thereto, a planetary gear, a rotatable mounting for the planetarygear, a third gear meshed with the planetary gear, a mounting for thethird gear, both of said mountings being axially shiftable, a member towhich either of said mountings may be fastened by the shifting thereof,

and a band for restraining the rotative movement of the gear-mount notfastened to the said member,

12. In a transmission-gear of the planetary type, the combination ofaxiallyshiftablc drums, an encircling band, a means for shifting any oneof said drums within said encircling band, and a means for contractingthe said band upon the drum which is within it, to restrain the rotativemovement of that drum.

13. in an organized transmissiongear, the combination of tworestrainable shiftable members, and a single restraining means, to whicheither of said members may be shifted.

1a. In atransmission-gear, the combination with a sustaining means, of apinion, a planetary gear, a rotatable shiftable mounting for theplanetary gear, a third gear meshed with the planetary gear, a mountingfor the third gear, a member coacting with both of said mountings,disconnectible means for connecting the said member and theplanetary-gear mount upon shifting the latter, a clutch forconnectingthe said member and the mounting for the third gear, and means forindependently restraining the movement of the gear-mounts.

15. In a transmission-gear, the combination with a sustaining means, ofapinion, a planetary gear, a rotatablemounting for the planetary gear, athird gear meshed with the planetary gear, a mounting for the thirdgear, a member coacting with both of said mountings, disconnectiblemeans for connecting the said member and the planetary-gear mount, aclutch for connecting the said member and the mounting for the thirdgear, and. means for independently restraining the movement of thisgear-mount, the said means for connecting the planetary-gear mount andthe said member comprising interengaging teethon said parts, one of thesame being shiftablc to engage and disengage the teeth.

16. In atransmission-gear, the combination with a sustaining means, of apinion, a planetary gear, arotatable mounting for the planetary gear, athird gear meshed with the planetary gear, a mounting for the thirdgear, a member coacting with both of said mountings, disconnectiblemeans for connecting the said member and the planetary-gear mount, aclutch for connecting said member and the mounting for the third gear,and means for independently restraining the movement of the gear-mount,the said clutch comprising a collar attached to the said coactingmember, a web on the mount of the third gear, a clampingring,friction-rings interposed between the collar, web and clamping-ring, andmeans for operating the clamping-ring.

17. In a transmission-gear, the combination of driving and drivenelements, two shiftable transmitting members, controllable means forcausing said members to be revolubly driven from the driving element,and means for shifting said members and for connecting them alternatelywith the driven element upon the shifting of said members.

18. 1n a transmission-gear, the combination of driving and drivenelements, two shiftable transmitting members, controllable means forcausing said members to be revolubly driven from the driving element,means for shifting said members and for connecting them alternately withthe driven element upon the shifting of said members, and means inaddition to the aforesaid elements and coacting with certain thereof forcausing the transmissiongear to turn as a unit.

IOO

19. The combination With a driving ele- 1n testimonywhereoflhavesignedmyname ment, a driven element, transmission devices to thisspecification in the presence of tWo sub- 10 operating between the twoand including a scribing Witnesses. rotatable aXially-shiftablegear-mount, means for connecting said gear-mount With one of saidelements upon the shifting of the mount, and means for connecting theother of said elements to the transmission devices.

ALDEN E. OSBORN.

Witnesses:

JOHN H. GRATAOAP, N. W. OSBORN.

